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High Power Amplifier P
RO
A 2000
2.11 Expansion module slots
Fig. 7 Module slots
Module 1
slot for the first audio module in a chain
of 3, also for the optional HAVARIE card
Module 2
slot for the second audio module in a
chain of 3, also for the optional remote
control card
Module 3
slot for the third audio module in a chain
of 3
Caution: Make sure to have the amplifier
switched off before installing or removing
modules. Only the K+H P
RO
A 2000
modules may be inserted in the proper
slots. If you plug in non K+H products you
can destroy both modules and amplifier!
In this case product warranty will not be
extended!
2.11.1 Controls and jumpers in the slots
On the bottom of the slots you will find trim-pots
for adjusting the maximum permissable RMS-
power, which the limiter allows for. It can be tuned
from 20 watts to maximum. By means of the
jumpers two limiter time constants can be selected:
a short one for high frequency drivers and a long
one for midrange and subwoofers.
Caution: When leaving the factory the
amplifier is set to maximum output power
and long time constant. Changing these
settings makes only sense, if the amplifier
is always used together with the same
speaker system. Only skilled personnel
with professional test equipment can
modify these settings. Inexpert altering
results in bad performance.
3. Operation
3.1 Front panel
The whole heated air of the power stage is blown out
over the front panel. Do not close the front side of the
amplifier rack for not to constrain the cooling otherwise
maximum power output cannot be guaranteed.
Module 1 Audio and HAVARIE
Module 2 Audio and Remote
Module 3 Audio
3.2 Indicators and level control
Fig. 8 Indicators and level controls
Signal A/B
input level is - 20 dBu or more
Limit A/B
peak-, RMS- or distortion limiter is active
Clip A/B
input signal level is too high or amplifier
in the LIMIT OFF mode is overdriven
Mains
amplifier is ready
A/B Direkt
the front level controls are not functional.
This can be activated by the HAVARIE
module.
The trim-pots 2nd Volume on
the top-side can only be set in
function by the optional remote
control card.
Fig. 9 Trim-pots 2nd Volume
3.3 Diagnosis indicators
Fig. 10 Diagnosis indicators